Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 18413

Hash
000000e40f54b3c44b64b737ee74ba3b322b9c5beb28eadf65942ee1f4bfa1f6
Confirmations
22686
Time
2026-10-09 08:24:52 UTC
Median time
2026-10-09 08:16:20 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6b2bfc3810149b4e0d0045d0048b1536bd7c9d0622b48ec8a5574339807dd517
Previous block
0000004416ee9a45382bcda72affd4ee930dcd1c43b7ecb901ad90ef71c736c1
Next block
000000cc7d3da7542ca5d0c3a5cfbd996ad3a5ef4d445efb5d6d2c1266219a1d

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 18413 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
5e8ec98bd548bf4525f2884860f686fc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6b2bfc381014…4339807dd517 coinbase1250